Wash and clean the vegetables.
Cut the cauliflower into small florets and the potatoes into small dices.
Chop tomatoes and green chillies.
Heat oil in a pan. Add cumin seeds and let them crackle.
Add the chopped onions and green chillies.
Cook till they are golden brown in colour.
Add the powdered masala and cook for a while.
Add the vegetables and fry for some time.
Add the tomatoes and cook covered till the vegetables are cooked.
Adjust the seasonings and serve hot garnished with chopped coriander leaves.